首页 > 代码库 > LINQ之Min

LINQ之Min

Min

说明:返回集合中元素的最小值;不延迟。生成SQL语句为:SELECT MIN(…) FROM

1.简单形式:

查找任意产品的最低单价:

var q = db.Products.Select(p => p.UnitPrice).Min();

2.映射形式:

查找任意订单的最低运费:

var q = db.Orders.Min(o => o.Freight);

3.元素:

查找每个类别中单价最低的产品:

var categories =    from p in db.Products    group p by p.CategoryID into g    select new {        CategoryID = g.Key,        CheapestProducts =            from p2 in g            where p2.UnitPrice == g.Min(p3 => p3.UnitPrice)            select p2    };

LINQ之Min